Valve



June 193,0; '5. KARSTEN 6 VALVE Filed April 9, 1928 Inventar Attorney Patented June 3, 1930 BEN KARSTEN, F wnarorrnnn, rowA VALVE Application filed April 9, 1928. Serial No. 268,579.

The present invention relates to improve ments in valves and the objects and advantages thereof will become apparent from the following description taken in conjunction with the accompanying drawings, wherein:

Figure 1 is a side cross sectional elevation of the valve when closed, showing the arcuate flanges of the valve sections resting on the bottom of the casing, and extending between 19 the side walls of the casing and the projections provided at the bottom of the vertical rib formed on opposite sides of the casing.

Figure 2 is .a fragmentary horizontal section taken therethrough substantially on the line 22 of Figure 1 lookingdownwardly,

and

Figure 3 member.

Referring to the drawing in detail it will be seen that the numeral 5 denotes a casing with oppositely disposed inlet and outlet necks 6 internally threaded for pipe connections and the like. A screw threaded cap 7 is mounted in the top of the casing and has a stuffing box structure at the top thereof. A

stem 10 is threaded through the cap structure 7 extending down into the casing. The side walls of the casing are provided with vertical ribs 11 and the bottom has extenis a bottom plan view of the gate sions 12 extending inwardly from the ribs 11' and extending to the sides thereof.

The gate member is formed in two sections 14 through which the lower portions of the stem 10 extends. These sections 14- are dished out attheir upper surface to provide the wedge receiving pocket 15. The stem has an annular wedge 16 thereon for cooperating with the pocket 15 to spread the sections apart and close all communication of the necks 6 with the interior of the casing.

A washer 17 is on the lower end of the shank and held in place by a-cotter pin 18 or. the like and engages the under surface of the gate sections 14. These valve sections 14 are pros vided at their bottom surface with arcuate flanges 19 to rest on the bottom of the casing and to extend between the side wall of the casing and the projections 12 as is clearly il-' lustrated in Figure 2.

From the above detailed description it will be seen that when the stem 10 is threadedi out of the casing the gate sections are liftedup,- f wardly so as to allow a flow through the'valve casing. However when the stem is threaded inwardly the valve sections are moved dofwnwardly and when the gate 19 engages the body the wedge 16 cooperates with the wedgepocket to spread the sections apart thus tight v ly closing off flow through thecasing. It will be seen that the structure is exceedingly simple, inexpensive to manufacture, strong and durable, easy to manipulate, compact and convenient, and otherwise efiicient and reliable for the purpose intended. I

The present embodiment of the invention 1 has been disclosed in detail merely by way of example since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description.

It will be apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit or scope of the invention as hereinafter claimed or sacrificng any of its advantages.

Having thus described my invention, what i I claim as new is:

1. A valve of the class described, comprising a casing provided with inlet and outlet oppositely disposed, a gate movable in the casing, a valve stem extending through the casing,means for threadedly mounting said stem, means for connecting the gate with the stem, and means for preventing rotation of the gate within the casing, said last mentioned means comprising vertically extending cutout portions formed on the opposite sides of said gate, vertically disposed ribs formed on the walls of the casing and extending into said cut out portions, widened extensions formed on said ribs, at their respective lower ends, arcuate flanges formed on the bottom surface of said gate to rest on the bottom of I the casing and adapted to'extend between the extensions of the respective ribs and the sidewalls. v I 2. A valve of the character described, comprising a casing provided with inlet and out let ports, a pair of gate sections movable in the casing,ascrewthreadedvalve stem extending into the casing means for connecting the sections with said stem, vertically extending cut-out portions formed on the respective sections adjacent their oppositely disposed inner faces, vertically disposed ribs formed on the walls of the casing and extending inwardly between the adjacent cut-out portions of the respective sections, widened extensions formed on the respective ribs at the lower ends 10 thereof arcuate flanges formed on the bottom surface of the respective sections to rest on the bottom of the casing and adapted to extend between the said extensions and the side walls, wedge pockets formed on the upper surface of said sections, and an annular wedge on the said valve stem associated with the said pockets for spreading the sections apart when the stem is threaded to close the valve. I

In testimony whereof I afiix my signature.

' BEN KARSTEN. 

